Daewoo DTQ-14Q1FS, Руководство по обслуживанию

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Symbol Function
PIN NO SYMBOL NAME FUNCTION
1 C COLLECTOR POWER TRANSISTOR COLLECTOR
2 GND GROUND GROUND(POWER TRANSISTOR EMITTER)
3 B BASE POWER TRANSISTOR BASE
4 SINK SINK BASE URRENT(Is) INPUT
5 OCP OVER CURRENT PROTECTION OVERCURRENT SENSING SIGNAL INPUT
6 INH INHIBIT/LATCH SYNC, OFF TIME/LATCH CIRCUIT CONTROL INPUT
7 F/B(SENS) FEED BACK(SENSING)INPUT CONSTANT VOLTAGE CONTROL SIGNAL INPUT
8 DRIVE DRIVE BASE DRIVE CURRENT(Id)OUTPUT
9 Vin Vin SUPPLY VOLTAGE FOR CONTROL CIRCUIT
14
This chassis designed for free voltage(AC 100V ~ AC 220V) power. power block contains power IC, SMPS
transformer and several passive components.
The power IS STR-S5707 has power transistor. oscillator circuit, voltage comparator circuit, thermal protection
circuit, OCP(over current protection)circuit inside.
1. STR-S5707 BLOCK DIAGRAM
OPERATION CHARACTERISTICS OF POWER BLOCK(I801)
2. PIN DESCRIPTION
3. OTHER FUNCTION
OVP Built-in Overvoltage Protection Circuit
TSD Built-in Thermal Shutdown Circuit